This 401(k) Calculator estimates how your workplace retirement account grows when you defer part of each paycheck, receive an employer match, and earn compound returns until retirement. Enter salary, your contribution percent, the match formula, expected return, and years left to work. The output separates employee deferrals, employer match, and investment growth so you can see which piece drives the total. Use it before open enrollment to test whether bumping deferral one percent is worth more than chasing a hotter fund menu.
